Acid Test Kit Gold 10K 14K 18K 22K Silver Platinum Testing Stone Jewelers Tool One bottle of each PuriTEST 10K, 14K, 18K, 22K, Platinum and Silver test acid 4" Scraper / Cutter and Easy to Use Instructions Included! Premium PuriTEST brand stone included in box. 1/2 ounce of acid per bottle - Fresh Bottled within last 30 days